PVC membrane and coated graphite potentiometric sensors based on 1-phenyl-3-pyridin-2-yl-thiourea for selective determination of iron(III)

Motlagh, M. Ghanei; Taher, Mohammad Ali; Ahmadi, Sayed Ali

doi:10.1016/j.electacta.2010.05.098

Cited by 33 publications

(14 citation statements)

References 37 publications

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“…To measure the concentration of iron, current techniques used are expensive and require trained analytical chemists. Recently, a potentiometric device was made by Motlagh et al 27 to speed up water sample analysis in a cost efficient and accessible way. Here, they used a PVC membrane electrode and a coated graphite electrode with 1-phenyl-3-pyridin-2-yl-thiourea (PPT) as the iron carrier.…”

Section: Potentiometric Sensorsmentioning

confidence: 99%

Electrochemical Sensors and Biosensors

et al. 2011

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By using a solid KCl melt in conjunction with an Ag/AgCl component, Vanau et al. 8 were able to fabricate an SSRE designed specifically for beverage industry applications. They found that this SSRE had a wide range of pH use, stable potentials, and small drift potentials (1 mV at room temperature over 3 months time). The reported stability and lifetime of this reference electrode make it particularly applicable for the food industry. In addition to food industry, engine diagnostics are utilizing SSRE to assess efficiency. Oxygen sensors have long been utilizing yttria-stabilized zirconia-based potentiometric components. Recently, Mn-based oxides have been studied to find a suitable SSRE to ensure accurate on-board diagnosis for engines. Miura et al. 9 found Mn 2 O 3 -sensing electrodes to function with excellent sensitivity and has great potential for miniaturization.Rius-Ruiz et al. 10 recently reported a carbon nanotube (CNT)-based SSRE. The most successful design tested utilized a photopolymerized n-butyl acrylate polymer in conjuction with SWCNTs, acting as the transducer layer. This type of transducer layer was often superior to alternative solid transducers, and the resulting SSRE proved insensitive to room lighting. The superior characteristics of this reference electrode as well as its ease of fabrication allow for potential widespread usage in a multitude of systems.Other Papers of Interest. To ensure reference electrodes keep up with current miniaturization trends, it has become challenging to find suitable materials for all potential applications. One such challenging arena is that of steel corrosion monitoring. Muralidharan et al. 11 developed a NiFe 2 O 4 reference electrode due to its superior fabrication cost and ease and its resistance to corrosion. The resulting electrode exhibited stability and low polarization currents in a calcium hydroxide solution, which is commonly used in concrete environments.Shibata et al. 12 examined the stability of an Ag/AgCl reference electrode with the novel salt bridge 1-methyl-3-octylimidazolium bis(trifluoromethanesulfonyl)-amide. This bridge was proposed and found to be superior in order to avoid the interference found using alternate ionic liquid salt bridges, such as KCl, while experimenting in phthalate buffer. Further evaluation of stability is necessary; however, the initial findings suggest this ionic liquid salt bridge is promising. Huang et al. 13 recently developed a working system using a Nafion strip membrane as an ion-conducting bridge, allowing for electrochemical measurements in pure water. By using this bridge, it is possible to avoid potential leaching contaminants and gain higher accuracy.Measuring the electrodeposition of boron melts is a challenge to researchers due to the unknown chemistry of KF-KCl-KBrF 4 . Pal et al. 14 fabricated an Ag/AgCl reference electrode that was found to be reversible and to have suitable stability and nonpolarizability. This will allow for the first available measurements of KF-KCl-KBrF 4 chemistry at high tempera...

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Section: Potentiometric Sensorsmentioning

confidence: 99%

Electrochemical Sensors and Biosensors

et al. 2011

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“…Data reported in Table give a comparison between previously reported Fe(III)‐selective electrodes and the present proposed electrodes with respect to slope, linear range, pH, response time and detection limit . It is noteworthy that the slope, linear range, response time and selectivity coefficients of the proposed electrodes are considerably improved with respect to those of the previously reported Fe(III)‐selective electrodes (Table ).…”

Section: Resultsmentioning

confidence: 82%

Construction and characterization of nano iron complex ionophore for electrochemical determination of Fe(III) in pure and various real water samples

Ali

Mahmoud

2019

Applied Organom Chemis

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Electrochemical methods represent an important class of widely used techniques for the detection of metal ions. The unique chemical and physical properties of nanoparticles make them extremely suitable for designing new and improved sensing devices, especially electrochemical sensors and biosensors. This study focused on the synthesis of a nano-Fe(III)-Sud complex and its characterization using various spectroscopic and analytical tools, optimized using the density functional theory method, screened for antibacterial activity and evaluated for possible binding to DNA using molecular docking study. Proceeding from the collected information, nano-Fe(III)-Sud was used further for constructing carbon paste and screen-printed ion-selective electrodes. The proposed sensors were successfully applied for the determination of Fe(III) ions in various real and environmental water samples. Some texture analyses of the electrode surface were conducted using atomic force microscopy. At optimum values of various conditions, the proposed electrodes responded towards Fe(III) ions linearly in the range 2.5 × 10 −9 -1 × 10 −2 and 1.0 × 10 −8 -1 × 10 −2 M with slope of 19.73 ± 0.82 and 18.57 ± 0.32 mV decade −1 of Fe(III) ion concentration and detection limit of 2.5 × 10 −9 and 1.0 × 10 −8 M for Fe(III)-Sud-SPE (electrode I) and Fe(III)-Sud-CPE (electrode II), respectively. The electrode response is independent of pH in the range 2.0-7.0 and 2.5-7.0, with a fast response time (4 and 7 s) at 25°C for electrode I and electrode II, respectively.Moreover, the electrodes also showed high selectivity and long lifetime (more than 6 and 3 months for electrode I and electrode II, respectively). The electrodes showed good selectivity for Fe(III) ions among a wide variety of metal ions. The results obtained compared well with those obtained using atomic absorption spectrometry.

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“…In Table 4, some recent optical and electrochemical sensors for Fe 3 + detection have been compared. It should be noted that proposed sensors show relatively better selectivity, lower detection limit and wide concentration range as compared to the previously reported methods for the determination of Fe(III) [38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] as shown in Table 4.…”

Section: Comparison Studymentioning

confidence: 91%

Enhanced Performance of CNT‐doped Imine Based Receptors as Fe(III) Sensor Using Potentiometry and Voltammetry

2018

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A highly sensitive and selective potentiometric and voltammteric assay for the detection of Fe3+ using (E)‐3‐((2‐(2‐(2‐aminoethylamino) ethylamino) ethylimino)methyl)‐4H‐chromen‐4‐one (IFE(III)) ionophore was developed. To demonstrate the ion‐to‐electron transfer ability of MWCNT, these were incorporated in the ion‐selective membrane and response characteristics of Fe3+ electrode was compared with those of the traditional ion selective electrode. The electrode showed an improved Nernstian slope, lower detection limit, response time of less than 5 s and working in a pH range of 3.0 to 8.0. Differential pulse voltammetric studies were performed for IFE(III)‐Fe3+ complex in DMSO solvent medium at glassy carbon (GC) electrode. A linear relationship between the cathodic peak current and concentration of Fe3+ was observed in the range of 1.6×10−5 to 4.4×10−5 mol/L with a detection limit of 5.2×10−8 mol/L. The electrode shows remarkable selectivity for Fe3+ ions over alkali, alkaline earth, transition and heavy metal ions. The optimized electrode was successfully applied for the determination of Fe3+ ion in different real‐life samples using potentiometric technique. Theoretical calculations were used to support the complexation behavior of Fe3+ with IFE(III).

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PVC membrane and coated graphite potentiometric sensors based on 1-phenyl-3-pyridin-2-yl-thiourea for selective determination of iron(III)

Cited by 33 publications

References 37 publications

Electrochemical Sensors and Biosensors

Electrochemical Sensors and Biosensors

Construction and characterization of nano iron complex ionophore for electrochemical determination of Fe(III) in pure and various real water samples

Enhanced Performance of CNT‐doped Imine Based Receptors as Fe(III) Sensor Using Potentiometry and Voltammetry

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